Process for producing binding strips for boxes, crates, and the like



Jan. 9, w W LD 1,942,735

, CRATES, AND THE LIKE PROCESS FOR PRODUCING BINDING STRIPS FOR BOXES 1 L 6 p. MM MANN a fi m E m c 16 W M MM vvg 2 5 b xx 9 m an H m W r m d M m B Jiyl. J' .3.

Jan. 9, 1934. w WAKEHELD 1,942,735

PROCESS FOR PRODUCING BINDING STRIPS FOR BOXES, CRATES, AND THE LIKE Filed March 28, 1933 2 Sheets-Sheet 2 fiatented Jan. 9, 1934 PROCESS FOR PRODUCING BINDING STRIPS FOR BOXES, CRATES, AND THE LIKE William Wakefield, Richmond, near Melbourne,

Victoria, Australia,

Machinery. Company Proprietary to Overseas Limited,

assignor Melbourne, Victoria, Australia Application Ma'r'ch'28, 1933, Serial No. 663,240,

and in Australia October 22, 1930 9 Claims. (01. 153-2) Applications have been filed in Australia October 22, 1930; Austria October 19,1931; Belgium October 15, 1931; Canada October 1, 1931; Ceylon September 22, 1931;

Czechoslovakia October 15, 1931; Denmark October 13, 1931; Finland October 20, 1931; France October 12, 1931; Germany October 13, 1931;

Great Britain September 30, 1931; Holland October 21, 1931; Hungary October 14, 1931; India September 14, 1931; Italy October 6, 1931; Irish Free State October 7, 1931; Japan October '7, 1931; Malay States September 29, 1931; Norway October 19, 1931; New Zealand September 1, 1931; Union of South Africa October 6, 1931;

Spain October 16, 1931;

application, Serial No. present application is a October 21, 1931.

565,900, of which the a continuation in part.

The object of the present invention is to pro duce rapidly and economically improved metal binding strips which are at once-ready to apply to the box parts to bind and hinge them together, so that four parts (or three) may be folded up from the fia t into the position they occupy in a box and the two end parts added to complete the box, without the use of any nails or other fixing means.

The process is particularly useful in the pro duction of two similar binding strips simultaneously, from a single metal strip, the two strips being then ready for application respectively to the right and left bound sides of the box.

The invention is illustrated in the accompanying drawings, in which Figs. 1-6 illustrate the several stages of a single fiat metal strip being converted by the present process into a pair of channel-section metal strips with plain edged flanges on one side and teeth on the other side.

Fig. '7 is a section on an enlarged scale on line VII-VII of Fig. 3, and Fig.8 a section on-an enlarged scale on line VIII-VIII, Fig, 4.

Fig. 9 is a perspective view on an enlarged scale of a portion of the finished binding strip.

Fig. locillustrates the to bind and hinge four Fig. 11 illustrates the ished box.

Referring to Fig. 1,

as delivered for example is the rear end of a portion of this strip which.

application of the strips box parts together, and construction or the fin- A is a flat metal strip, from a roll of strip, B

has already been operated on according to the present process, has been detached from the strip A, but has still to undergo further operations. It will be seen that in Fig. 1, strip B has been slotted at 1, 1 and been reduced in width at 2, ;2. The strip A has been centrally slotted out at 6, had mitre notches 3, 3, cut in opposite sides of the strip and at 4, 4 has been reduced in width to form fastening tangs 5, 5 the purpose of which will be referred to later.

In-Fig. 2 a second pair of mitre notches 7, 1' have been made further along the strip A and between them is cut an aperture 8. In the strip B have been out a number of spaced oblique slots 9, 9 disposed along the centre line of the 7 strip.

In Fig. 3 a

third pair of mitre notches 10, 10 have been made further along the strip A, and between them is cut an aperture 11. Slots 12, 12, similar to the slots 9 in strip B in Fig. 2, have been out along the centre of the strip A, and the borders 13, 13 at either side of the strip have been bent or folded downwards along the dotted lines 14, 14, for a distance d, to form flanges. In the strip B, the borders of the strip have been folded down as are the borders of the strip A above referred to, and further oblique slots 15, 15 have been out which break into the previously cut slots 9, and thus divide the strip into two strips, each having on their inner'edges rows of teeth 16.

In Fig. 4, further oblique slots 17 have been out along the centre of strip A, breaking into the slots 12 and thus dividing the strip for part of its length and leaving teeth 18 on the adjacent edges of the two parts of the strip. In the strips B, B the teeth have been bent downwards, to lie perpendicular to the body of the strips, and the'channel-sectioned binding strips B, B are finished.

In Fig. 5, a further pair of mitre notches 19, 19 are cut in the strip A, with an aperture or slot 20 between them. The oblique slots 12, 12 have been continued back as far as the aperture 11. The borders of the strip have been folded 10 down to form flanges, over a further distance d, and over approximately the same distance the oblique slots 1'? have been continued backwards, forming more teeth 18, thus further separating the strip or strips, and the previously formed 5 teeth 18, at the right hand ends of the strips A, A are bent down.

In- Fig. 6 two slots 21, 21 are formed at the left'hand end ofstrip A and the width is reduced by slotting at 22, 2 2 The oblique slots 12 110 have been continued further along the strip. The borders of the strip have been bent down as far as the slot 20, and the oblique slots 17 have been out further along the strip and so divided the strip A further into two strips. The already formed teeth have been bent down over a distance extending back to the slot 11. The strip A has been cut off at its left hand end from the remainder of the strip, and there is also shown in Fig. 6 the beginning of a new portion of strip 0, shaped like the right hand end of strip A in Fig. 1. 4

The subsequent operations on strip -A are similar to those already described with reference to the left hand end of strip B and to Figs. 24, viz. cutting the remainder of the oblique slots 12 (9 in Fig. 2), bending down the flanges, cutting the remaining slots 1'7 (15 in Fig. 3), and bending down the teeth so formed.

It will be seen that the finished strips have no teeth at the parts corresponding to the slots 6, 8, 11 and 20, and that the flanges of the strips have breaks in them corresponding to the mine notches 7, 10, 17. This is to facilitate the 51m ing up of the strips informing the box. V

To use the completed strips for box manufacture, the box parts 23 (Fig. 10) are laid upon the teeth of two parallel-arranged strips with a space left between the edges of the box parts'and the flanges 13 of the strips. The teeth of the strips are forced to enter the material of the box parts under pressure, as by rolling them anu spaces or channels are left between the edges of the box parts and the strip flanges into which the end parts 24 of the box can be inserted to complete the box, when the bound and hinged parts are bent up into box form as shown in Fig. 11.

When the lid of the box is shut down, the't'a'ngs 5 at the Qid of the strip are adapted to be inserted in the slots 21, and to be bent under the strip and be turfied over in the recessed parts 22, so as to hold the box shut.

If it is not desired to have the box lid hinged to the remainder of the box, the strip may be modified, and the end formation, "with times 5 and aperture 6, is repeated as shown in dotted lines in Fig. 1. An additional slot 25 may be cut at each side of the strip to make the'whole lid section easily detachable from the "remainder. Additional apertures 21a are also made.

It will be understood "that the mitre notches 3, 7, 10 are spaced according to the dimension of the box to be bound by the strips. These notches allow the strips to be bent readily at the corners of the box. As shown in the drawings, the mitre notches preferably do notfcoine to a point but have squared portions at the bottoms. This affords a useful tolerance in bend,- ing up the box parts, in case the'diinensions of the sides or bottom are not strictly'a'ccuratel It also tends to prevent the strips being 'beht up with a sharp right angle and thus 'rehder's the strip less likely to break at the bend.

The flanges are formed on the strip according to the process above described, before the teeth are cut. The strip may be operated upon by suitable male and female 'diesto form the various slots and apertures above referred to. The dies for slotting the strip to completethe teeth may reciprocate with the dies forfor'ming the flanges,

but the latter tools come into operation first,'so that the flanges are formed before thestrip is divided into two by the completion of the teeth.

I claim:

1. Process for the manufacture from flat metal strip, of channel-section metal binding strips for boxes, comprising the operations of forming in one edge of the flat strip mitre notches adapted to allow the strip to be bent at right angles transversely to its length, when it has attained channel section, bending a border of the strip at the side in which the said notches are formed, to form a flaiigefs'tandihg at right angles to the plane of the body of the strip, cutting teeth in the body 7 of the I strip along a line substantially parallel to said flange and bending said teeth to stand at right angles to the plane of the body of the strip, and on the same side of it as the flange.

2. Process as claimed in claim 1, wherein one of the said operations is performed on one longitudinal section-of the flat strip while another operation is being performed on another longitudinal section of the flat strip.

3. "Process as claimed inclaim 1, in which before a cycle of operations has been completed on one section of the strip, a cycle-of operations has been-begun upon a succeeding section of the strip.

4. Processasclaimed in claim 1, wherein after a-fr'iitre notch has been formed in one edge of the striaaportion of the border of said strip'between the said notch and the free end of the strip is 'bent at right angles to the body of the strip to forma'fiange.

5. Process as claimed in claim 1, wherein the body-of the strip is slotted at points opposite to the said'mitre notches and-in the line-of the teeth I to be-cut' in the strip, so that during the teeth cutting operation'no te th are cut opposite to the mine notches.

I 6. Processes claimed in claim 1, wherein the widthof the 'borderof the strip which is bent to foirhthe flange'is-less than the depth of the mitie 'hotches. -7. "Process as claimed in claim 1, wherein said 'r'r'iitre notchesare' formed on both sides of the metal s'tripandopposite to one another and said teeth are'cut along substantially the centre line of-the strip, in such-a way as to separate the strip intot'wo parts.

8. Process for the manufacture from a flat etal strip of channel-section metal binding strips for boxes, wherein mitre notches are cut inoppositesitles ofthe flat metal strip, the strip is twice slotted along its centre line in-such manner as to divide the striplongitudinally into two "strips with toothed edges and the borders of the strip are bent to form flanges on the strips,said *hange formih'g operation taking place after the strip has been slotted once, but before the strip is dividedihto "two.

9. Process for the manufacture, from flat metal fst'rip, ofchahnel-section binding strip for boxes, comprising the joperaticnsof bending a border of i the strip tb 'fOrin'a-flange standing at-right angles to the plane 'of the body of thest'r'ip, cuttin'g teeth' in 'the body 'of-thestrip in a'line substantially parauei to said border, 'simultal4"? neously with said teeth-cutting operation forming a mitre notch-adapted to allow the strip to be bent 'in the piane-containingthe flange, and bending saidfteethto stand at right angles to the body f the 'strip,-and on the same side of it as the flange.

WAKEFIELD. '[L. s.] 

